Flat Roof Leaking Around Chimney

Sometimes a chimney may start to leak only after a very wet series of storms.

Flat roof leaking around chimney.

Most of the time the metal flashing has to be inserted into a slot into the face of the brick. You must also make sure the shingles and flashing surrounding the chimney are in proper working order. Water test the roof at the area of the chimney using a garden hose. That part of the flashing is very vulnerable to leaks.

Oh yeah don t use the fireplace with your chimney covered with plastic and this is not how to fix a leaking chimney. For example your roof might have a leak through the attic vent or roof shingle at the top. Wrap the chimney with plastic and tape it securely. Sometimes a leak starts in a different place but finds its way to the chimney and then visibly enters the inside of a room at the point of the chimney.

Mortar cracks chimney flashing and crown deterioration on a chimney will contribute to leaks on a flat roof. Gas appliances output a lot of water vapor and if it s not venting properly it will condens. Chimney roof leaks are usually caused by gaps or cracks between the metal flashing used to join the chimney to the roof and the chimney. Re pointing a chimney is not a simple process and is often messed up by novice people that try to do it.

But if you have problems with water leaking around the outside of your chimney down into your walls you may have a problem with worn out flashing or sealant. The mortar grout is usually the first to go. The flashing on a chimney is one of the biggest reasons for roof leaks. If your roof still leaks it is not the chimney.

Is your roof leaking. Or you may have a poorly designed valley at the bottom of the roof slope and directly above your chimney that catches debris snow and ice. Apply roof cement to any gaps or cracks. It could be your chimney that s the issue.

Inspect the flashing for gaps or cracks. All chimneys need maintenance over time. The outer structure of your chimney often retains water which can make the roof leak in a hard rain.